Most disaster-prone counties in Wisconsin

Wisconsin has 866 county-level FEMA disaster declarations across 72 counties. The dominant hazard type is severe storm. Crawford County leads with 22 declarations, followed by Vernon County and Milwaukee County.

This ranking shows every county in Wisconsin ordered by how many times FEMA has issued a disaster declaration affecting it. Counties near coastlines, river systems, or wildfire corridors tend to appear at the top because the same geographic exposure produces recurring events across decades.

Each county links to a full disaster history page with the complete declaration timeline, hazard type breakdown, decade trends, and whatever FEMA spending data is available. For a national view, see the most disaster-prone counties in America page.

Wisconsin ranking

All counties by FEMA declaration count

#	County	Declarations	Top hazard	First year	Latest year
1	Crawford County	22	Severe Storm	1965	2020
2	Vernon County	22	Severe Storm	1965	2020
3	Milwaukee County	21	Flood	1969	2025
4	Grant County	20	Severe Storm	1965	2020
5	Dane County	19	Severe Storm	1976	2020
6	Richland County	19	Severe Storm	1965	2020
7	La Crosse County	18	Severe Storm	1965	2020
8	Waukesha County	18	Flood	1969	2025
9	Green County	17	Severe Storm	1969	2020
10	Iowa County	16	Severe Storm	1976	2020
11	Racine County	16	Severe Storm	1969	2020
12	Buffalo County	15	Severe Storm	1965	2020
13	Clark County	15	Flood	1973	2020
14	Juneau County	15	Severe Storm	1976	2020
15	Kenosha County	15	Severe Storm	1973	2020
16	Monroe County	15	Severe Storm	1976	2020
17	Rock County	15	Severe Storm	1973	2020
18	Trempealeau County	15	Severe Storm	1965	2020
19	Ashland County	14	Flood	1965	2020
20	Lafayette County	14	Severe Storm	1969	2020
21	Sauk County	14	Severe Storm	1976	2020
22	Dodge County	13	Severe Storm	1974	2020
23	Dunn County	13	Flood	1965	2020
24	Jackson County	13	Severe Storm	1976	2020
25	Jefferson County	13	Severe Storm	1965	2020
26	Ozaukee County	13	Flood	1965	2020
27	Pepin County	13	Flood	1965	2020
28	Pierce County	13	Flood	1965	2020
29	Walworth County	13	Severe Storm	1965	2020
30	Washington County	13	Severe Storm	1976	2025
31	Wood County	13	Flood	1969	2020
32	Adams County	12	Severe Storm	1976	2020
33	Fond du Lac County	12	Flood	1974	2020
34	Iron County	12	Flood	1969	2020
35	Portage County	12	Severe Storm	1973	2020
36	Rusk County	12	Flood	1973	2020
37	Bayfield County	11	Flood	1972	2020
38	Calumet County	11	Severe Storm	1976	2020
39	Chippewa County	11	Flood	1973	2020
40	Columbia County	11	Severe Storm	1976	2020
41	Marathon County	11	Severe Storm	1965	2020
42	Sheboygan County	11	Flood	1973	2020
43	St. Croix County	11	Severe Storm	1965	2020
44	Barron County	10	Biological	1965	2020
45	Burnett County	10	Severe Storm	1976	2020
46	Douglas County	10	Flood	1972	2020
47	Outagamie County	10	Flood	1973	2020
48	Polk County	10	Biological	1965	2020
49	Washburn County	10	Severe Storm	1965	2020
50	Waupaca County	10	Flood	1973	2020
51	Waushara County	10	Severe Storm	1973	2020
52	Winnebago County	10	Severe Storm	1974	2020
53	Eau Claire County	9	Flood	1969	2020
54	Green Lake County	9	Severe Storm	1973	2020
55	Lincoln County	9	Biological	1969	2020
56	Marquette County	9	Severe Storm	1973	2020
57	Oneida County	9	Flood	1976	2020
58	Sawyer County	9	Severe Storm	1976	2020
59	Brown County	8	Severe Storm	1973	2020
60	Langlade County	8	Biological	1965	2020
61	Manitowoc County	8	Biological	1973	2020
62	Price County	8	Biological	1976	2020
63	Shawano County	8	Biological	1976	2020
64	Taylor County	8	Biological	1976	2020
65	Forest County	7	Biological	1976	2020
66	Kewaunee County	7	Biological	1973	2020
67	Marinette County	7	Biological	1973	2020
68	Menominee County	7	Biological	1976	2020
69	Door County	6	Biological	1973	2020
70	Florence County	6	Biological	1976	2020
71	Oconto County	6	Biological	1973	2020
72	Vilas County	6	Biological	1976	2020